[Tagging] Tunnels and bridges

[Malcolm Herring]

On 31/01/2013 15:17, Martin Vonwald wrote:
> As you already need to
> split the roads at the edges of the structure, because you need to add
> the layer (and bridge) key within the structure, there are already
> nodes present - just connect them with the OSM way of the structure.

Why do you need split the road at the edges of the bridges? This is 
currently done because it is the only way of defining the bridge. If we 
are to split the two features, then this need disappears. If the bridge 
crossing ways have width or weight limits, these do not necessarily 
coincide with the structural limits of the bridges. They often apply to 
the approaches as well, so the section of the road where the restriction 
applies begins and ends beyond the bridge.